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National Oceanic and Atmospheric Administration

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Space Weather Conditions
on NOAA Scales
24-Hour Observed Maximums
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Latest Observed
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R1-R2 --
R3-R5 --
S1 or greater --
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R1-R2 --
R3-R5 --
S1 or greater --
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R1-R2 --
R3-R5 --
S1 or greater --
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Current Space Weather Conditions
on NOAA Scales
R1 (Minor) Radio Blackout Impacts
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HF Radio: Weak or minor degradation of HF radio communication on sunlit side, occasional loss of radio contact.
Navigation: Low-frequency navigation signals degraded for brief intervals.
More about the NOAA Space Weather Scales

X8.2 (R3-Strong) X-Ray Event Observed at 10/1606 UTC.

R3 text
X8.2 (R3-Strong) X-Ray Event Observed at 10/1606 UTC.
published: Wednesday, September 13, 2017 21:15 UTC

An X8.2 X-Ray flare (R3-Strong radio blackout) occurred on 10 September at 1606 UTC (12:06 ET). The source region was Region 2673, now located just around the visible disk. This R3 event produced a rapid increase in relativistic proton levels which are currently above the S3 (Strong) threshold. There was also an associated CME from this event. While a fast event, the CME was off the Sun-Earth line and is not expected to produce notable geoeffective impacts. Keep checking our SWPC webpage for the latest information and updates.